如何清除片段中的共享首选项？

Question

How i can clear shared preferences from fragment? Thank you

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
       sharedPreferences = getActivity().getSharedPreferences("login.conf", Context.MODE_PRIVATE);

        editor = sharedPreferences.edit();
        editor.clear();
        editor.commit();
        Intent logout = new Intent(getActivity(), LoginActivity.class);
        startActivity(logout);
        Log.d(TAG, sharedPreferences.getString("username", ""));
        Log.d(TAG, sharedPreferences.getString("password", ""));
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_fragment_logout, container, false);
    }

That my fragment

Answer 1

you can directly use preference name and clear it from anywhere.

SharedPreferences preferences = getSharedPreferences("Mypref", 0);
preferences.edit().remove("shared_pref_key").commit();

or

SharedPreferences preferences = context.getSharedPreferences("Mypref", Context.MODE_PRIVATE);
preferences .edit().clear().commit();

Answer 2

Use something like this:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_fragment_logout, container, false);
    SharedPreferences sharedPreferences = getActivity().getSharedPreferences("login.conf", Context.MODE_PRIVATE);

    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.clear();
    editor.commit();
    Intent logout = new Intent(getActivity(), LoginActivity.class);
    startActivity(logout);
    Log.d(TAG, sharedPreferences.getString("username", ""));
    Log.d(TAG, sharedPreferences.getString("password", ""));
    // Inflate the layout for this fragment
    return view;
}